ESD静电二极管ESD0402V18C15

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3. ESD Wave Form
IEC61000-4-2 Standards
SEVERITY LEVEL 1 2 3 4 AIRDIRCHARGE 2 KV 4 KV 8 KV 15 KV DIRECT DISCHARGE 2 KV 4 KV 6 KV 8 KV
IEC 61000-4-2 Compliant ESD Current Pulse Waveform
Temperature Cycle
After being continuously applied the maximum allowable voltage at 85 ± 2℃ for 1000± 2 hours, the specimen shall be stored at room temperature and humidity for one or two hours, the change of varistor voltage shall be within 10﹪. The specimen should be subjected to 40 ± 2℃, 90 to 95 ﹪RH enviroment, and the maximum allowable voltage applied for 1000 hours, then stored at room temperature and humidity for one or two hours. the change of varistor voltage shall be within 10﹪ The specimen should be subjected - :2 A - to -40 ± 2℃, without load for 1000 hours and then REV stored at room temperature for one or two hours. the change of varistor voltage shall be within 10 ﹪
Damp Heat Load/ Humidity Load
Low Temperature Storage
过压保护-静电抑制器 ESD Suppresser
(a)Preheat 1.The temperature rising speed is suggested to be 2~4℃/s. 2.Appropriate preheat time will be from 60 to 120 seconds. (b)Heating 1.Careful about sudden rise in temperature as it may worsen the solder ability. 2.Set the peak temperature in the range from 215℃ to 225℃. (c)Cooling 1.Careful about slow cooling as it may cause the position shift of component. . ※Perform adequate test in advance as the reflow temperature profile will vary according to the conditions of the manufacturing process, and the specification of the reflow furnace
5. Hand Soldering
In hand soldering of the Varistors. Large temperature gradient between preheated the Varistors and the tip of soldering iron may cause electrical failures and mechanical damages such as crackings or breakings of the devices. The soldering shall be carefully controlled and carried out so that the temperature gradient is kept minimum with following recommended conditions for hand soldering. 5.1 Recommended Soldering Condition 1 (1) Solder : 1mm Thread solder (sn63:pb37) with soldering flux in the core. Rosin-based and non-activated flux is recommended. (2) Preheating The Varistors shall be preheated so that Temperature Gradient between the devices and the tip of soldering iron is 150C or below. (3)Soldering Iron Rated Power of 20w max with 3mm soldering tip in diameter. Temperature of soldering iron tip 300C max ( The required amount of solder shall be melted in advance on the soldering tip.) (4)Cooling After soldering. The Varistors shall be cooled gradually at room ambient temperature. 5.2 Recommended Soldering Condition 2(Without preheating) (1)Solder iron tip shall not directly touch to ceramic dielectrics.
过压保护-静电抑制器 ESD Suppresser
PART NO.
ESD0402V18C15
Symbol VRMS V DC Vv C VCLAMP I LDC I LDCA E Trise I Vv I Vv A < < < Value N 18 28 15 +15~-20 45 0.1 2 Unit V V V pF % V uA uA
1.2 Reference Data
Maximum Energy Absorption *4 Response time Leakage current at Vv × 80%(At initial state) Leakage current at Vv × 80% (After reality Test) Operatiog ambientg temperature Storage temperature Reflow solder profile temperature(Recommend) < < < < 0.1 3 1 50 200 -55~ +85 -55~+125 230 J ns uA uA ℃ ℃ ℃
1.3 Other Data
Body End termination Packaging Complies with Standard Procedure Marking ZnO Ag/Ni/Sn or Pt/Pd Reel IEC61000-4-2 Solgel None
Notes: * 1 The varistor voltage was measured at 1 mA current , tolerance at +-15% * 2 The Clamping voltage was measured at ESD strike during the transition from high to low impedance IEC61000-4-2. 30A@8KV,level4, after initiation of pulse, all test in contact discharge mode。 * 3 The Leakage current was measured working voltage。 * 4 The Energy only for customer reference。
- :3 A REV
过压保护-静电抑制器 ESD Suppresser
(2)Solder iron tip shall be fully preheated before soldering while soldering iron tip to the external electrode of Varistors.
4. Enviromental Reliability Test
Characteristic High Temperature Storage Test method and description The specimen shall be subjected to 125 ± 2℃ for 1000 ± 12 hours in a thermostatic bath without load and then stored at room temperature and humidity for 1 to 2 hours. The change of varistor voltage shall be within 10 ﹪. Step The temperature cycle of specified temperature shall be repeated five times and then stored at room temperature and humidity for one or two hours. the change of varistor voltage shall be within 10 ﹪and mechanical damage shall be examined. 1 2 3 4 High Temperature Load Temperature -40±3℃ Room Temperature 125±2℃ Room Temperature Period 30Min±3 1~2 hours 30Min±3 1~2 hours